(adsbygoogle = window.adsbygoogle || []).push({}); 1. Special Relativity

2. The problem statement, all variables and given/known data

Consider this Lagrangian:

L=(1/2) (\partial_{\mu} \Psi)(\partial^{mu} \Psi) + \exp(-(a\times \Psi)^2)

Have this field a mass term?

2. Relevant equations

3. The attempt at a solution

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# Homework Help: How do I know if this field has a mass term?

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